Vibrating screen

Abstract

The utility model relates to the technical field of screeners, in particular to a vibrating screen which comprises a machine frame. The adjusting frame is arranged above the rack, and the inclination angle of the adjusting frame is adjustable; the screen box is connected with the adjusting frame through a connecting mechanism, and the screen box is provided with a screen mesh and a vibration motor; and the feeding hopper is arranged above the screen box, and the inclination angle of the feeding hopper is adjustable. A first adjusting plate is arranged on the rack, a plurality of holes are formed in the first adjusting plate, one end of the adjusting frame is rotationally connected with the rack, and the other end of the adjusting frame is fixedly connected with the holes in the first adjusting plate; a second adjusting plate is arranged on the screen box, a plurality of holes are formed in the second adjusting plate, one end of the feeding hopper is rotationally connected with the screen box, and the other end of the feeding hopper is fixedly connected with the holes in the second adjusting plate. The screening speed and strength can be adjusted, and aluminum oxide can be finely screened conveniently.

Description

Technical Field

[0001] This utility model relates to the field of screening technology, specifically a vibrating screen. Background Technology

[0002] As an important screening device, the vibrating screen mainly consists of key components such as a vibrating motor, screen box, screen mesh, and shock-absorbing springs. Among them, the vibrating motor is the core component that provides power, the screen box is the main structure that supports materials and other components, the screen mesh is responsible for the actual screening operation of materials, and the shock-absorbing springs can effectively reduce the impact of vibration generated during equipment operation on the foundation structure, ensuring the stability of equipment operation.

[0003] Its working principle is based on the drive of a vibrating motor. When the vibrating motor is started, it drives the screen box to vibrate at a high frequency. Under this vibration, the material placed on the screen surface will produce a series of complex movements, such as jumping and sliding. During these movements, the material will continuously come into contact with the screen mesh. Smaller particles can pass through the screen mesh smoothly and fall down, becoming the undersize material; while larger particles cannot pass through the screen mesh and remain on the screen surface, continuing to move forward until they finally become the oversize material, thus realizing the screening of the material.

[0004] In the alumina processing industry, vibrating screens play an indispensable role, widely used in multiple key processes. In the raw material screening stage, vibrating screens can screen raw materials such as bauxite entering the processing flow, removing impurities such as mud and stones, ensuring the uniformity of raw material particle size, and laying a good foundation for subsequent crushing and grinding processes. In the grinding and classification stage, vibrating screens form a closed-loop circulation system with equipment such as ball mills. By screening the ground products, products with qualified particle sizes are promptly screened out to avoid over-grinding, while larger particles are returned for further grinding to ensure that the particle size of the ground products meets the requirements. In the post-calcination product screening process, vibrating screens can screen the calcined alumina, removing impurities and incompletely reacted materials, and simultaneously classifying the product by particle size according to market demand.

[0005] However, existing vibrating screens have certain limitations. Their screening speed and intensity adjustment methods are relatively simple, making it difficult to achieve fine screening when dealing with materials like alumina that require high screening accuracy, and thus failing to meet the growing demand for high-quality production in the alumina processing industry. Utility Model Content

[0006] In order to solve the technical problems existing in the background art, the present invention provides a vibrating screen that can adjust the screening speed and intensity, which facilitates the fine screening of alumina.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A vibrating screen, comprising:

[0009] frame;

[0010] An adjustment frame is installed above the machine frame, and the tilt angle of the adjustment frame is adjustable;

[0011] The sieve box is connected to the adjusting frame via a connecting mechanism, and the sieve box is equipped with a sieve screen and a vibrating motor.

[0012] The feeding hopper is located above the screen box, and its tilt angle is adjustable.

[0013] Furthermore, a first adjusting plate is provided on the frame, and several holes are provided on the first adjusting plate. One end of the adjusting frame is rotatably connected to the frame, and the other end of the adjusting frame is connected and fixed to the holes on the first adjusting plate.

[0014] The screen box is equipped with a second adjusting plate with several holes. One end of the feeding hopper is rotatably connected to the screen box, and the other end of the feeding hopper is fixedly connected to the holes on the second adjusting plate.

[0015] Furthermore, the connecting mechanism includes:

[0016] The first connecting piece connects to the screen box;

[0017] The second connector is connected to the adjustment bracket;

[0018] A spring connects the first connector and the second connector;

[0019] The connecting column is fixedly connected to the first connecting member at one end and slidably connected to the second connecting member at the other end.

[0020] The first magnet is disposed on the second connector;

[0021] The second magnet is positioned adjustablely on the connecting post and works in conjunction with the first magnet.

[0022] Furthermore, an adjusting plate is fitted onto the connecting column, a second magnet is installed on the adjusting plate, and an adjusting nut is threaded onto the connecting column, with the adjusting plate connected to the adjusting nut.

[0023] Furthermore, one end of the screen box is provided with a downwardly inclined guide groove.

[0024] Furthermore, a hopper is installed on the frame, located below the screen.

[0025] Furthermore, the discharge port of the feeding hopper is equipped with an adjustable baffle.

[0026] The beneficial effects of this utility model are:

[0027] (1) The screening speed can be adjusted by adjusting the tilt angle of the adjusting frame. When the tilt angle of the adjusting frame changes, the downward force of the material on the screen will also change accordingly. Increasing the tilt angle increases the component of gravity on the material along the screen direction, and the downward speed of the material increases, thereby increasing the screening speed; conversely, decreasing the tilt angle will decrease the screening speed. In this way, the screening speed can be flexibly adjusted according to actual production needs to ensure screening efficiency and quality.

[0028] (2) Changing the tilt angle of the hopper can adjust the speed at which the material falls due to gravity. The larger the tilt angle of the hopper, the faster the material falls, and the feeding speed increases accordingly; conversely, the feeding speed decreases. The opening of the hopper outlet can also be adjusted by the baffle. Increasing the outlet opening increases the amount of material flowing out per unit time, and the feeding speed increases; decreasing the opening decreases the feeding speed. By combining these two adjustment methods, the feeding speed can be precisely controlled, making the equipment operation more stable.

[0029] (3) By adjusting the distance between the second magnet and the first magnet, the stiffness of the connecting mechanism can be adjusted, and the amplitude is adjustable. When the distance between the two magnets decreases, the magnetic force between them increases, the stiffness of the connecting mechanism increases, and the amplitude generated during vibration is relatively small; conversely, increasing the distance between the magnets weakens the magnetic force, reduces the stiffness of the connecting mechanism, and the amplitude will increase accordingly. This adjustment method can enable the equipment to maintain the optimal vibration state under different working conditions and improve work efficiency. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0032] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0033] Figure 3 This is a schematic diagram of the connecting mechanism.

[0034] In the picture:

[0035] 1. Feeding hopper, 2. Frame, 3. First adjusting plate, 4. Adjusting frame, 5. Connecting mechanism, 6. Vibrating motor, 7. Baffle, 8. Feeding hopper, 9. Second adjusting plate, 10. Screen box, 11. Screen, 12. Guide chute;

[0036] 51. First connector, 52. Spring, 53. Connecting post, 54. Second connector, 55. First magnet, 56. Second magnet, 57. Adjusting disc, 58. Adjusting nut. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings.

[0038] like Figure 1 , 2 As shown, a vibrating screen includes a frame 2. An adjusting frame 4 is disposed above the frame 2, and the tilt angle of the adjusting frame 4 is adjustable. A screen box 10 is connected to the adjusting frame 4 via a connecting mechanism 5, and the screen box 10 is provided with a screen 11 and a vibrating motor 6. A feeding hopper 8 is disposed above the screen box 10, and the tilt angle of the feeding hopper 8 is adjustable. A discharging hopper 1 is disposed on the frame 2, and the discharging hopper 1 is located below the screen 11. One end of the screen box 10 is provided with a downwardly inclined guide groove 12. Material enters the screen box 10 from the feeding hopper 8, and after being screened by the screen box 10, the material remaining on the screen 11 will be discharged from the guide groove 12. Material passing through the screen 11 will fall into the discharging hopper 1 and be discharged from the discharge port of the discharging hopper 1.

[0039] When the tilt angle of the adjusting frame 4 changes, the downward force of the material on the screen 11 also changes accordingly. Increasing the tilt angle increases the component of gravity acting on the material along the screen 11, causing the material to slide down faster and thus increasing the screening speed; conversely, decreasing the tilt angle reduces the screening speed. In this way, the screening speed can be flexibly adjusted according to actual production needs, ensuring screening efficiency and quality.

[0040] The greater the inclination angle of the feeding hopper 8, the faster the material falls, and the higher the feeding speed; conversely, the lower the inclination angle, the slower the feeding speed. Furthermore, the discharge port of the feeding hopper 8 is equipped with an adjustable baffle 7. The opening of the discharge port of the feeding hopper 8 can be adjusted via the baffle 7. Increasing the discharge port opening increases the amount of material flowing out per unit time, thus accelerating the feeding speed; decreasing the opening reduces the feeding speed. Through the combination of these two adjustment methods, the feeding speed can be precisely controlled, making the equipment operation more stable.

[0041] The frame 2 is equipped with an arc-shaped first adjusting plate 3, with several holes at different height positions. One end of the adjusting frame 4 is rotatably connected to the frame 2, and the other end of the adjusting frame 4 is connected and fixed to the holes on the first adjusting plate 3. By connecting and fixing the adjusting frame 4 to the holes at different height positions on the first adjusting plate 3, the tilt angle of the adjusting frame 4 can be changed.

[0042] A second adjusting plate 9 is provided on the screen box 10, and several holes are opened at different height positions on the second adjusting plate 9. One end of the feeding hopper 8 is rotatably connected to the screen box 10, and the other end of the feeding hopper 8 is connected and fixed to the holes on the second adjusting plate 9. By connecting and fixing the feeding hopper 8 to the holes at different height positions on the second adjusting plate 9, the tilt angle of the feeding hopper 8 can be changed.

[0043] like Figure 3 As shown, the connecting mechanism 5 includes a first connecting member 51. The first connecting member 51 is bolted to the screen box 10. The second connecting member 54 is bolted to the adjusting frame 4. A spring 52 connects the first connecting member 51 and the second connecting member 54. One end of the connecting post 53 is fixedly connected to the first connecting member 51, and the other end of the connecting post 53 penetrates the second connecting member 54 and is slidably connected to the second connecting member 54. A first magnet 55 is disposed on the second connecting member 54. A second magnet 56 is adjustablely disposed on the connecting post 53, and the second magnet 56 cooperates with the first magnet 55. In specific implementation, there is a magnetic repulsion between the second magnet 56 and the first magnet 55. To achieve adjustable position of the second magnet 56 on the connecting post 53, an adjusting plate 57 is sleeved on the connecting post 53, the second magnet 56 is installed on the adjusting plate 57, and an adjusting nut 58 is threadedly connected to the lower end of the connecting post 53. The adjusting plate 57 is connected to the adjusting nut 58. The position of the second magnet 56 on the connecting post 53 can be adjusted by turning the adjusting nut 58, thereby adjusting the distance between the second magnet 56 and the first magnet 55.

[0044] By adjusting the distance between the second magnet 56 and the first magnet 55, the stiffness of the connecting mechanism can be adjusted, thereby making the amplitude of the screen box 10 adjustable. When the distance between the two magnets decreases, the magnetic force between them increases, the stiffness of the connecting mechanism increases, and the amplitude generated during vibration is relatively small; conversely, increasing the distance between the magnets weakens the magnetic force, reduces the stiffness of the connecting mechanism, and the amplitude will increase accordingly. This adjustment method allows the equipment to maintain optimal vibration under different working conditions, improving work efficiency.

[0045] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A vibrating screen, characterized in that The utility model relates to a kind of vibrating screen, including: Frame (2); Adjusting frame (4) is set to the upper of frame (2), the inclination angle of the adjusting frame (4) is adjustable; Screen box (10) is connected with adjusting frame (4) by connecting mechanism (5), the screen box (10) is provided with screen (11) and vibration motor (6); Upper hopper (8) is set to the upper of screen box (10), the inclination angle of the upper hopper (8) is adjustable.

2. The vibrating screen according to claim 1, wherein: A first adjusting plate (3) is provided on the frame (2), a plurality of holes are formed in the first adjusting plate (3), one end of the adjusting frame (4) is rotatably connected to the frame (2), and the other end of the adjusting frame (4) is fixedly connected to the holes in the first adjusting plate (3); A second adjusting plate (9) is provided on the screen box (10), a plurality of holes are formed in the second adjusting plate (9), one end of the upper hopper (8) is rotatably connected to the screen box (10), and the other end of the upper hopper (8) is fixedly connected to the holes in the second adjusting plate (9).

3. The vibrating screen according to claim 1, wherein: The connecting mechanism (5) comprises: A first connecting member (51) connected to the screen box (10); A second connecting member (54) connected to the adjusting frame (4); A spring (52) connecting the first connecting member (51) and the second connecting member (54); A connecting column (53) fixedly connected at one end to the first connecting member (51) and slidably connected at the other end to the second connecting member (54); A first magnet (55) provided on the second connecting member (54); A second magnet (56) provided on the connecting column (53) in a position-adjustable manner, and the second magnet (56) cooperates with the first magnet (55).

4. The vibrating screen according to claim 3, wherein: The connecting column (53) is sleeved with an adjusting disc (57), the second magnet (56) is mounted on the adjusting disc (57), the connecting column (53) is threadedly connected with an adjusting nut (58), and the adjusting disc (57) is connected with the adjusting nut (58).

5. The vibrating screen according to claim 1, wherein: One end of the screen box (10) is provided with a downwardly inclined guide groove (12).

6. The vibrating screen according to claim 1, wherein: A lower hopper (1) is provided on the frame (2) below the screen (11).

7. The vibrating screen according to claim 1, wherein: The discharge opening of the upper hopper (8) is provided with a position-adjustable baffle (7).

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